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1、- = - = + = + = =- = + = + = + 2 = 1 - = = = = = = = = = = = = = = = = 5= + = -= - = 1- = + =2 + = -0.25= = + = + =+ = = = = = = = = 1= = + = + = - =+ = + = + = = = = = = 1= 0.74+ = 0.375 + = = = = = 1- = = = = = = = = + - - + + - + 0.25+ + + + 10 - () () () 6() - ( + ) + + - + 25 - - + - 5 + + +()
2、() 1 + - +(- ) 3 - - - 1 2 1557 131 1.8750.251 4() 2- - 0.8+0.2 2 - 3(- ) 6-() 4.8 + + 1.2 + + + + -( - ) + -(+ ) + + + + 1 + + +- 5 () 3(+ ) () + - + - 10() + - + + +( - ) - + - - + - 1-(+ ) - - - - - + + + -(- ) - - -(+ ) 3 + - + + + -(- ) - + -(- ) 2 - - 1 - + 1 - - - + -(- ) + - -(+ ) - + -(+ ) + - + - + + -(+ ) + + +(- ) 5 - - -(- ) + - -(+ ) 6(- ) +(+ ) -第 10 页-